<span>Abundance of each isotope = 0.1900 x100 = 0.001900
</span><span>0.2500 = 0.002500
</span><span>88.43 = 0.8843
</span>11.13 = 0.1113
Atomic mass of the element = (<span>135.90714 x 0.001900</span>) + (<span>137.90599 x 0.002500</span>) + (<span>139.90543 x 0.8843</span>) + (<span>141.90924 x 0.1113</span>)
= 0.258223566 + 0.344764975 + 123.718371749 + 15.794498412
= 140.1 amu is the atomic mass of the element
Answer:
21000000 m/s
Explanation:
Data obtained from the question:
Speed of light = 300000000 m/s
Speed of Alpha Particle =.. ?
From the question given above, the speed of the alpha particle is 7% of speed of light. Since we know the value for the speed of light, therefore, we can obtain the value for the speed of the alpha particle as follow:
Speed of Alpha Particle = 7% x speed of light
Speed of Alpha Particle = 7/100 x 300000000
Speed of Alpha Particle = 21000000 m/s
Why do employers withhold a set amount of your income? Tax system should be fair so that no one pays too much or too little tax burden. The government must pay interest on the debt and that means less money to spend on defense education transportation Social Security etc.
Answer:
The two enzymes are Superoxide dismutase and glutathione peroxidase.
Explanation:
2O2+2H+ = H2O2+02
The above reaction is catalyzed by superoxide dismutase which deals with the conversion of superoxide into hydrogen peroxide(H2O2).
H2O2 + 2GSH = 2H2O + GS-SG
The above reaction is catalyzed by glutathione peroxidase in which the reduced glutathione reacts with hydrogen peroxide(H2O2) to form H2O by reduction and oxidized glutathione by oxidation.The above reaction is a redox reaction which mean in this reaction both oxidation and reduction taking place simultaneously.The reaction occur to minimize the toxic effect of H2O2.
Answer: A) H-H is least polar
Explanation:
Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself. The more is the difference in electronegativity, the more polat the bond is.
1. H-H : Electronegativity difference = electronegativity of hydrogen - electronegativity of hydrogen =2.1 -2.1= 0
2. H-Cl : Electronegativity difference = electronegativity of chlorine - electronegativity of hydrogen = 3-2.1 = 0.9
3. H-F : Electronegativity difference = electronegativity of fluorine - electronegativity of hydrogen= 4-2.1= 1.9
4. H-I : Electronegativity difference = electronegativity of iodine - electronegativity of hydrogen= 2.5 -2.1= 0.4
Thus the least electronegativity difference between the bonded atoms is in H-H , this is least polar.
